Polishing-machine.



w. EICHBERGER @L E. WATSQN. PoLlsHING-IIMCHINE. APPLICATION FILED FEB.25. 1918.

1,294,430. I Patented Feb. 1s, 1919.

2 SHEETS-SHEET I.

W. EICHBERGER I E. WATSON,

POLISHING MACHINE.

APPLICATION FILED FEB. 25. 191B.

LQQAISO, Patented Feb. 18, 1919.

2 SHEETS-SHEET 2.

WTE@ STATES PATENT @FFE WILLIAM EICHBERGER ANI) EDWARD WATSON, 0FVJOODHAVEN, NEW YORK.

POLISHING-MACHINE.

Application filed February 25, 1918.

To all wko-m it may Concern:

Be it known that we, WILLIAM EIGHBERGER and EDWARD VATSON, citizens ofthe United States, and residing at Woodhaven, L. I., in the county ofQueens and State of New York, have invented certain new and usefulImprovements in Polishing-Machines, of which the following is aspecification, such as will enable-those skilled in the art to which itappertains to make and use the same.

This invention relates to polishing machines, and particularly tomachines of this class designed primarily for use in polishing floors;and the object of the invention is to provide an improved machine of theclass specified which is comparatively simple in construction, eihcientin operation, and which may be easily and conveniently manipulated byhand, and by a single operator; a further object being to provide amachine of the class specied which, in addition, to serving as a floorpolishing machine may also be used for other purposes as willhereinafter appear; and with these and other objects in view theinvention consists in a nachine of the class specified, constructed andoperated as hereinafter described and claimed.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form a part, in which the separate partsof our invention are designated by suitable reference characters in eachof the views, and in which Figure l is a side view of our improvedmachine;

Fig. 2 a plan view thereof with part of the construction in section;

Fig. 3 a partial section on the line 3-3 of Fig. 2;

Fig. 4 a partial section on the line 4 4 of Fis'- 2;

Fig. 5 a section on the line 5-5 of Fig. 2; and

F ig. 6 a section on the line 6-6 of Fig. 3.

In the practice of our invention, as shown in the drawings, we provide amain yoke shaped frame a having parallel front sides a2, and which istapered backwardly as shown at a3 and in the rear end portion of whichis mounted a roller Z).

Centrally and transversely of the main frame a is mounted a main bearingroller b2. and between the parallel side members a2 ofl the main frame cis mounted a supple- Specification of Letters Patent.

Patented Feb. 18, 1919.

Serial No. 219,037.

mental pivoted frame c having parallel side members c2 connected by ahorizontal base plate c3, and the frame c and side members a2 of themain frame a are connected by pivot pins (Z which are passedtherethrough.

The top of the rear end portions of the sides c2 of the supplementalframe are provided with outwardly directed ears cA1B which bear on andoverlap the side members a2 of the main frame, and spiral springs Z2 areconnected with the rear ends of said side members c2 as shown at Z3 andwith the side members a2 of the main frame as shown at (Z4, and serve tonormally hold the supplemental frame, or the ears c4 thereof in contactwith the side members a2 of the main frame.

An electric motor c is mounted on the horizontal base c3 of thesupplemental frame and the motor shaft c2 is provided with a gear 63which meshes with another gear c4E mounted on one side o2 of thesupplemental frame as shown at c5. The front end portions of the sidemembers c2 of the supplemental frame are provided with arc-shapedrecesses 05 adapted to receive ball bearings 7 which are held inposition by arc-shaped caps f2 pivoted to the bottom portions of theside members c2 of the supplemental frame at f3, and the top portions ofwhich are detachably connected with said side members 02 of thesupplemental frame by bolts f4 having winged nuts f5 as clearly shown inFigs. 1 and 5 of the drawings, and this construction securely holds thebearings f in place but permits the quick detachment thereof whenevernecessary.

Mounted in the bearings f is a rotary brush or bufling device gcomprising a drum composed of a plurality of similar parts g2 which arearc-shaped in form and the side edges of which are provided withoutwardly directed flanges g3, which form between said parts whensecured together longitudinal spaces g4 in which are mounted strips offibrous material g5, the outer edges of which are flanged as shown atgs. The separate parts of t-he drum g2 with the fibrous strips g5therebetween are held in posit-ion by end caps /7 which thread onto theend portions of said parts, as clearly indicated in Figs. 2 and 3 of thedrawings, said caps being provided with outwardly directed studs g8which pass through the bearings f, and the outer faces of which areprovided with threaded recesses gf, one of which is shown in Fig. 2. Itwill be noted that one end of the separate parts g2 ot' the drum isprovided with a left hand thread, while the opposite end is providedwith a right hand thread, which construction prevents the accidentaldisplacement ol said parts, or the loosening of their connection withthe caps g".

@ne of the caps ,(/7 is provided with a collar portion glo to which issecured a gear k which is adapted to mesh with the gear c",

as clearly indicated in Figs. 2 and 3 of the drawings. rlhe studs gsot'v the caps gi cxtend beyondy the sides ot the supplemental frame c,and a supplmental rota-ry brush or butling device e' comprising anannular flange portion 2 of fibrous material secured. between front andback plates 3 and i", is secured to one of the studs gs by a bolt 5which passes into the threaded recesses gf in the end of said stud,

The main frame a is provided between the rollers b and b2 with inwardlydirected members at between which is pivoted a handle piece attaciingblock j with which a handle member is adapted to be ronnected. The blocky' is pr vided with an upwardly directed lug 7'2 which forms a bearingfor a rod j* mounted to move longitudinally of the handle member l7'2and adapted to be operated from the handpiece on the end of the handlemember ,72, said handpiece being not shown.

Connected withl the lower end of the rod jt is a cross bar to the endsof which are pivotally connected one end of lever devices 7i pivoted toupwardly directed ears if as shown at L2, the ears L5 being integralwith a transverse web member as which joins the side members a2 of themain frame a, clearly shown in Fig. 2. rl"he other ends ot the leverdevices 7i: are pivoted to links ,71:2 which are also pivoted toupwardly directed` ears o0, as shown at ist, the ears co, being integralwith the base c2 of the supplemental frame as clearly indi-L cated inFig. d of the drawings, and with this construction by moving' the rod j*downwardly. the inner end of the supplemental frame c may be raisedagainst the tension of the springs 2 to bring the faces or' the brousstrips gf of the brush or butling device f/ in contact with the floor,and the eX- tent of this movement will be regulated by hand, as will bereadily understood, and suitable devices may be employed on the free endof the handle member ,7'2 to lock the rod ,it in any desired position aswill be readily understood, but as our invention is not limited to thesedetails of construction the same have not been shown.

A sheet metal housing m. is preferably connected with the top of oneside member c2 ot the supplemental frame c as clearly indicated in Fig.Ll and is adapted to inclose the gears c3 and ct to prevent dust,

and dirt, and other foreign matter troni coming in contact therewith,but it will be understood that the entire apparatus may be inclosed in asheetmetal or other casing providing sulticient room is allowed for theslight movement of the pivoted supplemental trame o within the maintrame a.

Frein the foregoing description, the operation ot` our improvedapparatus will be readily understoodV when taken in connection with theaccompanying drawings and the following statement. The normal positionof the separate parts vor the apparatus is indicatedV in the drawingsor, in other words, the supplemental trame c is held in contact with themainframe (L under the tension of the springs (Z2 andthe faces of thelibrous strips g5 employed in the rotary brush or butling device g aresupported above the floor, or out of operative connection therewith asclearly indicated in Fig. l, provided the handle member ,i2 is under thecontrol of the operator, or is manipulated to move the apparatus overthe floor, it being understood that when the apparatusv is idle theweight ot the motor and the brush or butling device g atthe front et themachine will tilt said apparatus forwardly and the device f/ will maltecontact with the floor, while the roller o will be raised slightly, andwhen itY is desired to use the apparatus, the fibrous material' employedin said brush or butling device is preferably saturated with a suitablefluid having cleansing and polishing qualities, after which the motor' eis put i-nto operationV in the usual manner, the electrical connectionsof said motor being not shown in the accompanying drawings for thereasons that they form no partof the invention, after which the rod j*is moved,downwardly to raise the inner end of the supplemental trame cagainst the tension of the springs Z2 to bring the brush or buillngdevice g.' into contact with the floor and the extent ci' this movementis under the control of the opera-tor and upon the release ot the rod j*by the operator, the springs (Z2 will return the supplemental trame c toits normal position.

In mounting the supplemental frame c in the manner shown and described,the operation ot the brush or buliing device f/ in connection with thefloor will be more or less tensionally controlled, and this will preventthe binding oic said brush or butting device g, which operation wouldstop the motor e and be objectionable, and by providing a detachablemounting for the brush' or similar device g in the side o2 of thesupplemental traine different brushes may be quickly attached anddetached from the supplemental traine whenever desired, it beingunderstood that one brush may be employed for applying the liquidsubstance employed for cleansing and polishing while another brush maybe employed for finishing the polishing operation, the latter being freefrom the liquid substance, and while we have described the apparatus asparticularly used for the purpose of polishing floors, it will beunderstood that brushes or other rotary devices of any kind or class maybe connected with the supplemental frame c for the purpose of scouringor cleaning floors, while sand-stone or emery rollers may be employedfor the purpose of planing or cleaning floor surfaces prior to painting,varnishing or polishing the same, in which latter event the apparatuswill be suitably constructed to do such work, a stronger framework beingnecessary as well as a motor of greater power, and it will be understoodthat our invention is not limited to the details of construction hereinshown and described for mounting and operating the separate parts of ourapparatus, and changes in and modifications of such dctails ofconstruction may be made, within the scope of the appended claims,without departing from the spirit of our invention or sacrificing itsadvantages.

In Fig. 2 of the drawing we have shown a supplemental rotary brush orbufiing device c' connected with one of the studs g8 and indicatedanother of said devices connected with the other stud g8 in dottedlines, and it will be understood that one of said devices may beconnected with either of4 said studs whenever desired, or both of saidstuds may be provided with one of said brush or buffing devices Thepurpose of these devices is to enable the operator of the machine toclean or polish the floor adjacent to the baseboards of the walls oraround corners, or objects in a room.

Having fully described our invention, what we claim as new and desire tosecure by Letters Patent, is

1. In an apparatus of the class described, a main frame approximatelyyoke-shaped in form and comprising a back portion, forwardly andoutwardly directed side portions and a top central web portion, a rollermounted in the back portion of the frame, another roller mounted betweenthe forwardly and outwardly directed side portions of the frame, and ahandle device pivoted to said frame between said rollers, a supplementalframe pivoted to the end portions of the forwardly and outwardlydirected side portions of the frame, a. rotary member mounted inconnection with the supplemental frame, an electric motor mounted in thesupplemental frame, a gear mounted on the motor shaft, a gear mounted onone end portion of the rotary member and a gear mounted on thesupplemental frame and in operative connection with said first namedgears.

E2. In an apparatus of the class described,

a main frame approximately yoke-shaped in form and comprising a backportion, forwardly and outwardly directed side portions and a topcentral web portion, a roller mounted in the back portion of the frame,another roller mounted between the forwardly and outwardly directed sideportions ofthe frame, and a handle device pivoted to said frame betweensaid rollers, a supplemental frame pivoted to the end portions of theforwardly and outwardly directed side portions of the main frame, arotary member mounted in connection wit-h the supplemental frame, anelectric motor mounted in the supplemental frame, a gear mounted on themotor shaft, a gear mounted on one end portion of the rotary member anda gear mounted on the supplemental frame and in operative connectionwith said first named gears, the supplemental frame being provided atits opposite sides and adjacent to the inner end portion thereof without-- wardly directed lugs adapted to engage the side portions of themain frame, tensional devices connected with the opposite sides of thesupplement-al frame at the inner end thereof and with the main frame andserving to hold said supplemental frame in engagement with the mainframe, lever devices pivoted to the top web portion of the main frame,onev of said levers being pivoted to the inner end portion of thesupplemental frame and an operating rod mounted to move longitudinallyof the handle member and in operative connection with the other endportions of said levers.

8. In an apparatus of the class described, a main yoke-shaped frame,comprising a back member, forwardly and outwardly directed side membersand a top web member, a roller mounted in the back member of the mainframe, another roller mounted between the side members of said frame, ahandle member pivoted to said frame between said rollers, a supplementalframe pivoted to the front end portion of the side members of the mainframe, a rotary member detachably connected with the supplemental frame,an electric motor mounted in said frame, gears for placing said motorand rotary member in operative connection, levers pivoted to the top webmember of the main frame, one end of said levers being pivoted to thesupplemental frame and an operating rod mounted to move longitudinallyof the handle member and in operative connection with the other endportions of said levers.

4. In an apparatus of the class described,

a main yoke-shaped frame, comprising a back member, forwardly andoutwardly directed side members and a top web member, a roller mountedin the back member of the main frame, another roller mounted between theside members of said frame, a handle member pivoted to said framebetween said rollers, a supplemental frame pivoted to the front endportion of the side members of the main frame, a rotary memberdetachably connected with the supplemental frame, an electric motormounted in said frame, gears for placing said motor and rotary member inoperative connection, levers pivoted to the top web member of the mainframe, one end of said levers being pivoted to the supplemental frame,an operating rod mounted to move longitudinally of the handle member andin operative con nection with the other end portions of said levers, thesupplemental frame being pro -f lame, said supple-mental framecomprising a bottom member and forwardly directed side members, bearingsmounted in the front end portions of the side members of thesupplemental frame, a rotary member mounted in said bearings, saidrotary member being provided with oppositely directed trunnions, anelectric motor mounted on the bottom member of the supplemental frame,gears for placing said motor and rotary member in operative connection,levers pivoted to the top member of the main frame, one end of saidlevers being pivoted to the supplemental frame, an operating rod mountedto move longitudinally of the handle member and in operative connectionwith the other end portion of said levers, the supplemental frame beingprovided at the inner end portion vthereof with means for limiting thedownward movement of said supplemental frame in the main frame, andtensional means for holding the supplemental f `ame against upwardmovement in the main frame.

6. ln an apparatus of the class described, a main frame comprising abach men'iber, forwardly directed side members and a top member, aroller mounted in the back member of the main frame, another rollermounted between the side members of said frame centrally thereof, ahandle member pivoted to said frame between said rollers,

a supplemental frame pivoted to the front' end portionof the sidemembers of the main frame, said supplemental frame comprising a bottommember and forwardly directed side members, bearings mounted in thefront end portions of the side members of the supplemental frame, arota-ry member mounted in said bearings, said rotary member beingprovided with oppositely directed trun-` nions, an electric motormounted on the bottom member of the supplemental frame, gears forplacing said motor and rotary member in operative connection, leverspivoted to the top member of the main frame, one end of said leversbeing pivoted to the supplemental frame, an operating rod mounted tomove longitudinally of the handle member and in operative connectionwith the other end portion of said levers, the supplemental frame beingprovided at the inner endv portion thereof with means for limiting thedownward movement of said supplemental frame in the main frame,tensional means for holding the supplemental frame against upwardmovement in the main frame, and supplemental rotary members detachablylconnected with the trunnions of the first named rotary member.

7. In an apparatus of the class described, a main frame, comprising aback member,v forwardly directedv side members and a top member, rollersmounted between said side members for supporting said frame, a handlemember pivoted to said frame between said rollers, a supplemental framepivoted to the front end portionsl of the main frame, a rotary memberdetachably connected with the front end of said supplemental frame, anelectric motor mounted in said supplemental frame, means for gearingsaid motor in connection with said rotary member, lever devices pivotedto the top member of the main frame, said lever devices being inoperative connection with said supplemental frame and an operating rodmounted to move longitudinally of said handle member and in operativeconnection with said lever devices whereby the pressure of the rotarymember on the iioor may be controlled. Y

ln testimony that we claim the foregoing as our invention we have signedour names in presence of the subscribing witnesses this 15th day ofFebruary, 1918.

lVlLLl'Altl ECHBER HER. EDVARD l/VATSON. llitnesses C. E. MULREANY, E.E. THoMrsoN.

Copies of this patent be obtained for ve cents each, by addressing theCommissioner of Patents, Washington, l. E.

